Find the Original Number of the Calculation
A student multiplied a number by 5 instead of 3. The answer that he got was 12 more than the correct answer. What is the original number?
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Let the original number be X and the correct result by Y.
As per the condition used on the problem statement, we can make two equations:
1) 5X = Y + 12
2) 3X = Y
Subtracting the 2nd equation from the 1st one, we get the value of X = 6.
So our answer is 6
As per the condition used on the problem statement, we can make two equations:
1) 5X = Y + 12
2) 3X = Y
Subtracting the 2nd equation from the 1st one, we get the value of X = 6.
So our answer is 6
kausar2k2:
This answer is wrong
I am not sure if you are looking at the answer given in the book, but just try to see the relation. I got the answer as 6. Lets check back. Multiply 6 by 5, you get 30. Multiply 6 by 3, you get 18. The difference between 18 and 30 is 12. Hence all conditions are being satisfied. Lets say if the answer was 9; 9 x 5 = 45 and 9 x 3 = 27. The difference between 45 and 27 is 18 and it does not satisfy the condition given in the problem statement.
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The answer is 9 (nine).
What???
:)
If your answer does not satisfy the requirements of the problem, how can it be correct?
ITS YOUR PROBLEM
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